Home / 39,339.61-54,289.28-21,434.61

Finding the Fourth Proportional to 39,339.61, 54,289.28 and 21,434.61

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Solution

The fourth proportional to 39,339.61, 54,289.28 and 21,434.61 is: 29,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.61 : 54,289.28 = 21,434.61 : x
  2. Step 2: Convert to fraction form
    39,339.61/54,289.28 = 21,434.61/x
  3. Step 3: Cross multiply
    39,339.61x = 54,289.28 × 21,434.61
  4. Step 4: Simplify right side
    39,339.61x = 1,163,669,436.81
  5. Step 5: Solve for x
    x = 1,163,669,436.81/39,339.61
  6. Step 6: Final answer
    x = 29,580.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.